*{
    margin: 0px;
    padding: 0px;
}
.a {
    width: 400px;
    /* height: 500px; */
    height: 550px;
    border: 1px solid #DEDEDE;
    text-align: center;
    margin: 100px auto;
}

.b {
    width: 200px;
    height: 60px;
    margin-top: 10px;
    margin-bottom: 20px;
}
.sdiv {
    height: 300px;
    border-top: 1px solid #DEDEDE;
    position: relative;
    padding-top: 10px;
}
.s1 {
    width: 200px;
    position: absolute;
    background-color: #fff;
    line-height: 31px;
    top: -15px;
    left: 50%;
    margin-left: -100px;
}
.tiaojian{
    width: 280px;
    height: 54px;
    margin: auto;
    margin: 20px auto;
    position: relative;
  
}
.tiaojian input{
    width: 280px;
    height: 40px;
    border-radius: 5px;
    padding-left: 20px;
    border: 1px solid #80C4AE;
    box-sizing: border-box;
}
.tiaojian i{
    font-size: 30px;
    color: greenyellow;
    position: absolute;
    right: -40px;
    top: 50%;
    margin-top: -30px;
    display: none;
}
span{
    font-size: 12px;
}
.tiaojian:nth-of-type(4) input{
    display: inline-block;
    width: 180px;
    height: 40px;
    border-radius: 5px;
    padding-left: 20px;
    border: 1px solid #80C4AE;
    box-sizing: border-box;
}
#yzm{
    display: inline-block;
    width: 95px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    font-size: 20px;
    background-color: pink;
}

#zhuc{
    width: 280px;
    height: 40px;
    border-radius: 5px;
    color: white;

    border: 1px solid #80C4AE;
    background-color: #80C4AE;
}
.left_jz{
    color: gray;
}
.right_jz a{
  color: #80C4AE;
}
form>input{
    width: 280px;
    height: 40px;
    border-radius: 5px;
    /* color: white; */
    border: 1px solid #80C4AE;
    margin-top: 40px;
    /* background-color: #80C4AE; */
}